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OC-Minitel/syslog/OpenOS/etc/rc.d/syslogd.lua

98 lines
2.3 KiB
Lua

local event = require "event"
local serial = require "serialization"
local computer = require "computer"
local havenet, net = pcall(require,"minitel")
local hostname = os.getenv("HOSTNAME") or computer.address:sub(1,8)
local cfg = {}
cfg.port = 514
cfg.relay = false
cfg.relayhost = ""
cfg.receive = false
cfg.write = true
cfg.destination = "/dev/null"
cfg.minlevel = 6
cfg.beeplevel = -1
cfg.displevel = 2
cfg.filter = {} -- todo
local listeners = {}
local timers = {}
local function filter(msg,level,service)
if level <= cfg.minlevel then
return cfg.write, (cfg.relay and havenet)
end
return false, false
end
function reload()
local f = io.open("/etc/syslogd.cfg","rb")
if f then
local newcfg = serial.unserialize(f:read("*a"))
f:close()
for k,v in pairs(newcfg) do
cfg[k] = v
end
else
local f = io.open("/etc/syslogd.cfg","wb")
if f then
f:write(serial.serialize(cfg))
f:close()
end
end
hostname = os.getenv("HOSTNAME") or computer.address:sub(1,8)
end
local function wentry(_,msg,level,service,host)
host = host or hostname
local ut = computer.uptime()
local msg, service = tostring(msg), tostring(service)
local entry = string.format("%s\t%i\t%s\n",service,level,msg)
local dwrite, drelay = filter(msg,level,service)
if dwrite then
local f = io.open(cfg.destination, "ab")
if f then
f:write(string.format("%.2f\t%s\t",ut,host)..entry)
f:close()
end
end
if drelay then
net.usend(cfg.relayhost, cfg.port, entry)
end
if level <= cfg.beeplevel then
computer.beep()
end
if level <= cfg.displevel then
io.write(string.format("%.2f\t%s\t",ut,host)..entry)
end
end
local function remote_listener(_,from,port,data)
if port ~= cfg.port then return false end
local service, level, msg = data:match("(.-)\t(%d)\t(.+)")
if not service and not level and not msg then return false end
msg, level, service = tostring(msg),tonumber(level),tostring(service)
wentry(nil,msg,level,service,from)
end
function start()
reload()
if #listeners > 0 then return end
event.listen("syslog",wentry)
listeners[#listeners+1] = {"syslog",local_listener}
if havenet and cfg.receive then
event.listen("net_msg",remote_listener)
listeners[#listeners+1] = {"net_msg",remote_listener}
end
end
function stop()
for k,v in pairs(listeners) do
event.ignore(v[1],v[2])
end
for k,v in pairs(timers) do
event.cancel(v)
end
end